Yes, as the odometer is placed in a conspicuous place. Also, it is required by many auto dealerships to check how much mileage is in a car, to ensure that it still functions.
The first skill to being a mechanic is to know cars. basic skills are changing a tire, changing the oil, then you can move on to tune ups, reading check engine codes.
Drive slower, and the speedometer decreases. If you are asking how to (illegally) decrease the odometer's kilometer reading, then shame on you.
It is easiest to check for odometer tampering if the odometer is not digital. Look at the numbers and see if they all line up at the top and bottom. Unless a number is about to change the line of numbers should be straight and they should not jiggle when tapped. Get a free CarFax Odometer Report and look for discrepancies that might appear on mileage, look at the cars title and service records and compare mileage, and see if the cars wear and tear matches with the mileage.
an auto mechanic
A person who repairs cars is called a "Mechanic".
The odometer
an automotive mechanic
Sure. Get a second opinion or get someone who is good with cars to check it for you.
That depends if all the wheels are on the ground. Some cars have to have the drive shaft disconnected so it can be towed. Then it doesn't click up mileage.
Auto manufacturers go to a lot of trouble to make sure people don't try to fraudulently roll back odometer miles to make a car look less "worn out" than it really is. There is no easy way to roll back an odometer other than to just replace it.
mechanic
A Mechanic.